KR102426298B1 - Double Glass Photovoltaic Assemblies - Google Patents

Abstract

This disclosure is in the field of photovoltaic technology and relates to double glass photovoltaic assemblies. The double glass photovoltaic assembly includes a laminate member, a junction box, and first and second frames disposed only on both long sides of the laminate member. The laminate member includes a cover plate glass, a first sealing adhesive film, a battery row, a second sealing adhesive film, a back plate glass and a bus bar. A through hole is provided in the back plate glass. One end of the bus bar is connected to the cell row. The other end of the bus bar passes through the through hole, is bent to form a curved edge, and is connected to the junction box. The curved edge of the busbar does not contact the edge of the through hole. The double glass photovoltaic assembly with double frame design can meet the load capacity requirement. In addition, after the assembly is mounted in the photovoltaic power generation system, the power generation at the back of the double glass photovoltaic assembly will not be affected, as no frame is placed on the bottom to prevent light from entering the back of the assembly from the ground, Snow does not accumulate easily on the assembly. The double glass photovoltaic assembly also reduces weight and reduces cost.

Description

Double Glass Photovoltaic Assemblies

The present invention relates to the field of photovoltaic technology, in particular to double glass photovoltaic assemblies.

This application claims priority to the following patent applications:

Chinese Patent Application No. 201811487725. 2, filed with the State Intellectual Property Office of China on December 6, 2018 under the title of "A DOUBLE-GLASS PHOTOVOLTAIC ASSEMBLY";

Chinese Patent Application No. 201910199346.1, filed with the State Intellectual Property Office of China on March 15, 2019 under the name of "A DOUBLE-GLASS PHOTOVOLTAIC ASSEMBLY"; and

May 7, 2019 under the designation "ELASTIC PROTECTOR FOR A FRAME OF A PHOTOVOLTAIC ASSEMBLY, A FRAME OF A PHOTOVOLTAIC ASSEMBLY AND A PHOTOVOLTAIC ASSEMBLY" Chinese Patent Application No. 201920641985.4, filed with the State Intellectual Property Office of China, the entire contents of which are incorporated herein by reference.

In a double glass photovoltaic assembly, ie a photovoltaic assembly encapsulated with double-sided glass, a cover plate and a back plate of a laminate member are glass plates. Depending on the type of solar cell used in the double glass photovoltaic assembly, the double glass assembly is a single-sided double glass photovoltaic assembly (the solar cell is a single sided solar cell, only the front side of the assembly can be used for power generation) ) and double-sided double-glass photovoltaic assemblies (solar cells are double-sided solar cells, both the front and back of the assembly can be used for power generation).

In a photovoltaic power generation system, a single sided double glass photovoltaic assembly is generally installed in the manner shown in FIG. 1 . A segmented frame 2' is mounted on the opposite long side of the laminate member 1, and the assembly is mounted to the bracket by way of the segmented frame 2'. The bracket includes a longitudinal bracket 3' disposed along a long side direction of the laminate member 1 and a transverse bracket 4' disposed along a short side direction of the laminate member 2 .

Since both the front and rear surfaces of the double glass assembly can be used for power generation, the horizontal bracket 4 ′ installed in the manner shown in FIG. 1 affects the light incident on the rear side, and thus the power generation of the rear side of the double glass assembly will affect Therefore, in the photovoltaic power generation system, the double-sided double glass assembly generally adopts the following installation method:

First method: As shown in Fig. 2, the segmented frame 2' is mounted on both long sides of the laminate member 1, and the assembly is performed without disposing the transverse bracket 4', the segmented frame 2' ) by the vertical bracket (3'). The problem with this installation method is that the load capacity of the double-sided double-glazed assembly cannot meet the requirement of 5400 Pa as defined by the International Electrotechnical Commission (IEC) standard.

Second method: As shown in Fig. 3, the frame 2' is installed around the laminate member 1 and the assembly is installed on the longitudinal bracket by the frame on the long side. And the rear of the assembly is also not blocked by the horizontal bracket. As shown in Figure 4, a problem with this method is that since the assembly is generally positioned at an angle to the ground, the lower side frame of the assembly will block light from the ground from reaching the back of the assembly. , which reduces development. In addition, since dust and snow accumulate on the lower side of the frame, a hot spot is formed at a location where dust and snow are accumulated, thereby reducing the development of the assembly and may damage the assembly to some extent.

Based on the foregoing, embodiments of the present disclosure provide a double glass photovoltaic cell assembly that can not only meet the load capacity requirement, but also do not affect the power generation of the back side.

Specific technical measures are as follows:

This embodiment provides a double glass photovoltaic cell assembly, wherein the double glass photovoltaic assembly includes a laminate member, a junction box, and a first frame disposed only on two long sides of the laminate member and a second frame;

The laminate member includes a cover plate glass, a first encapsulation adhesive film, a battery string, a second encapsulation adhesive film, a back plate glass and a busbar. );

a through hole is provided in the back plate glass;

one end of the bus bar is connected to the battery row, and the other end of the bus bar passes through the through hole and is bent to form a bending edge and connected to the junction box;

The curved edge of the busbar does not contact the edge of the through hole.

In an alternative embodiment, the first frame and the second frame are provided axially symmetrically with the longitudinal centerline of the laminate member as the axis of symmetry.

In another alternative embodiment, the distance between the curved edge of the busbar and the edge of the through hole is at least 0.1 mm.

In another alternative embodiment, the distance between the curved edge of the busbar and the edge of the through hole is at least 1 mm.

In another alternative embodiment, there is a distance between both ends of the first frame and both ends of the second frame and two short sides of the laminate member.

In another alternative embodiment, the first frame is provided axially symmetrically with the transverse centerline of the laminate member as the axis of symmetry, and/or the second frame is axially axial with the transverse centerline of the laminate member as the axis of symmetry. provided symmetrically.

In another alternative embodiment, the length of the first frame and the length of the second frame are the same.

In another alternative embodiment, a ratio of the lengths of the first frame and the second frame to the length of the long side of the laminate member may be 50% or more.

In another alternative embodiment, the first frame and the second frame include a first mounting plate, a second mounting plate, and a connecting plate, the first mounting plate and the second the mounting plates are arranged facing each other, and the first side of the first mounting plate and the first side of the second mounting plate are respectively connected to the connecting plate;

The laminate member is disposed between the first mounting plate and the second mounting plate, and fixed to the first mounting plate and the second mounting plate via an adhesive.

In another alternative embodiment, an elastic protector is provided between the first mounting plate and the second mounting plate;

The resilient protection may include an upper and a lower portion facing each other; and

It is formed as a U-shaped main body including a connection part connecting the upper part and the lower part; the upper part, the lower part and the connecting part are respectively fixed to the first connecting plate, the second connecting plate and the connecting plate; a part of the laminate member is located between the upper part and the lower part, and the laminate is located outside the elastic protection. A portion of the member is fixed to the first connecting plate and the second connecting plate via an adhesive.

In another alternative embodiment, a protrusion is formed on the upper portion of the U-shaped body; A slot cooperating with the projection is formed on a surface of the first mounting plate facing the second mounting plate.

In another alternative embodiment, the upper and lower free ends of the U-shaped body have a covering portion covering the second side edge of the first mounting plate and the second side edge of the second mounting plate, respectively. are formed respectively.

In another alternative embodiment, the lid portion is formed as a snapping portion extending outwardly from the U-shaped body.

In another alternative embodiment, the number of the elastic shields is two or more, and two of the elastic shields are respectively located at opposite ends of the first connecting plate.

In another alternative embodiment, the cell row comprises a plurality of solar cells that are single-sided solar cells or double-sided solar cells.

In another alternative embodiment, each row of cells comprises a plurality of solar cells that are whole-piece solar cells or sliced solar cells.

This embodiment also provides another double glass photovoltaic cell assembly comprising a laminate member and first and second frames respectively disposed on both long sides of the laminate member.

The first frame and the second frame are provided axially symmetrically with a longitudinal centerline of the laminate member as an axis of symmetry.

In another alternative embodiment, the upper end of the first frame, the upper end of the second frame and the upper short side of the laminate member are flush.

There is a distance between both ends of the first frame, both ends of the second frame, and both short sides of the laminate member.

In another alternative embodiment, the first frame is provided axially symmetrically with the transverse centerline of the laminate member as the axis of symmetry, and the second frame is provided axially with the transverse centerline of the laminate member as the axis of symmetry. do.

In another alternative embodiment, the ratio of the lengths of the first frame and the second frame to the length of the laminate member is at least 50%.

The technical solution according to the embodiment of the present disclosure provides at least the following advantages:

Embodiments of the present disclosure provide a dual frame double glass photovoltaic cell assembly in which frames are provided only on both long sides of a laminate member. When the double glass photovoltaic assembly is installed, the assembly is mounted to a longitudinal bracket through the frame on both long sides. Also, the curved edge of the busbar in the double glass photovoltaic assembly does not contact the through hole edge of the glass back plate. Thus, the double glass photovoltaic assembly can meet the load capacity requirement without placing a horizontal bracket on the back side. And since there is no frame at the bottom, light from the ground will not be blocked from reaching the back of the assembly, so it will not affect the development of the back of the double glass photovoltaic assembly. In addition, since there is no frame on the lower side of the double glass photovoltaic cell assembly according to the embodiment of the present disclosure, dust and snow do not easily accumulate, thereby reducing the risk of hot spots due to dust and snow. In addition, a “double frame” design in accordance with embodiments of the present disclosure may reduce the weight and cost of the double glass photovoltaic assembly.

1 is a schematic diagram illustrating a method of installing a conventional single-sided double-glazed assembly including a segmented frame.
2 is a schematic diagram illustrating a method of installing a conventional double-sided double-glazed assembly including a segmented frame.
3 is a schematic diagram showing a method of installing a conventional double-sided double-glazed assembly in which a frame is provided on all four sides.
4 is a schematic diagram showing a path of light from the ground in the installation method shown in FIG.
5 is a schematic structural diagram of a double glass photovoltaic cell assembly according to an embodiment of the present disclosure.
6 is a schematic structural diagram illustrating a positional relationship between a curved edge of a busbar and a through hole edge of a rear plate in a double glass photovoltaic cell assembly according to an embodiment of the present disclosure.
7 is a schematic diagram illustrating a method of installing a double glass photovoltaic cell assembly according to an embodiment of the present disclosure.
8 is a schematic diagram illustrating a path of light from the ground in a double glass photovoltaic cell assembly according to an embodiment of the present disclosure after installation;
9 is a schematic structural diagram of an alternative frame of a double glass photovoltaic cell assembly according to an embodiment of the present disclosure;
10 is a schematic structural diagram of an elastic shield of a double glass photovoltaic assembly according to an embodiment of the present disclosure;
11 is a schematic diagram illustrating a method of installing a double glass photovoltaic cell assembly according to an embodiment of the present invention.

This embodiment provides a double glass photovoltaic cell assembly. 5 shows the structure of a double glass photovoltaic cell assembly according to this embodiment. As shown in FIG. 5 , the double glass photovoltaic assembly includes a laminate member 1 , a junction box, and a first frame 21 and a second frame 22 disposed only on both long sides of the laminate member 1 . . In this embodiment, no frames are provided on both short sides of the laminate member 1 .

The laminate member 1 includes a cover plate glass, a first sealing adhesive film, a battery row, a second sealing adhesive film, a rear plate glass provided with a through hole 13 and a bus bar 12 .

The cover plate glass, the first encapsulating adhesive film, the cell row, the second encapsulating adhesive film and the back plate glass are laminated in this order. One end of the bus bar 12 is connected to the battery row, and the other end of the bus bar 12 passes through the through hole 13 and is bent to form a curved edge 121 and is connected to the junction box 3 .

As shown in FIG. 6 , the curved edge 121 of the bus bar 12 does not contact the edge 131 of the through hole 121 .

As shown in FIG. 7 , when the double glass photovoltaic cell assembly according to the embodiment of the present disclosure is installed, the double glass photovoltaic assembly is installed on the vertical bracket by the first frame 21 and the second frame 22 , The double glass photovoltaic assembly is arranged obliquely so that one short side of the laminate member 1 is upward (away from the ground) and the other short side of the laminate member 1 is down (close to the ground). No transverse brackets are placed on the back of the double glass photovoltaic assembly.

In an embodiment of the present disclosure, the laminate member 1 is substantially rectangular. For convenience of description, after installing the double glass photovoltaic cell assembly, the upper short side of the laminate member 1 is referred to as the upper side, and the lower short side is referred to as the lower side. side). The ends of the first frame 21 and the second frame 22 positioned on the upper side are referred to as an upper end, and the ends positioned on the lower side are referred to as a lower end. In an embodiment of the present disclosure, “longitudinal” means a direction parallel to the long side of the laminate member 1, and “transverse” means a direction parallel to the short side of the laminate member 1 . .

Since the double glass photovoltaic assembly according to the embodiment of the present disclosure is not provided with a frame on the lower side, it will not block light from the ground from reaching the back of the assembly, so that the development of the back of the double glass photovoltaic assembly will not be affected. will be.

On the other hand, in the double glass photovoltaic assembly according to the embodiment of the present disclosure, the curved edge 121 of the busbar 12 does not contact the edge 131 of the through hole of the back plate glass. That is, the distance between the curved edge 121 of the bus bar 12 and the edge 131 of the through hole of the rear plate glass is greater than zero.

6 , in the embodiment of the present disclosure, the curved edge 121 of the bus bar 12 means a bent portion of the bus bar 12 . In the laminate member 1, a part of the busbar 12 is located inside the glass of the back plate, and the other part is located outside the glass of the back plate. The curved edge is the part that connects these two parts.

In the conventional double glass photovoltaic assembly, the curved edge 121 of the busbar 12 is in direct contact with the edge 131 of the through hole of the back plate glass, so that the strength of the glass in the back plate applies a load to the double glass assembly. In the case of losing, the strength of the glass of the back plate is weakened, and even the glass of the back plate may rupture.

However, in the embodiment of the present disclosure, the curved edge 121 of the busbar 12 does not contact the edge 131 of the through hole of the glass of the back plate. Therefore, the double glass photovoltaic assembly provided in the embodiment of the present disclosure has a frame only on both long sides, and can pass 3 cycles of 5400Pa/2400Pa load test without a horizontal bracket on the rear side, thereby meeting the requirements of the IEC standard.

In addition, since there is no frame on the lower side of the double-glazed photovoltaic cell assembly according to the embodiment of the present disclosure, dust and snow do not easily accumulate, thereby reducing the risk of generating hot spots due to dust and snow. The "double frame" design can reduce the weight and cost of the double glass photovoltaic assembly.

In the embodiment of the present disclosure, the distance between the curved edge 121 of the bus bar 12 and the edge 131 of the through hole may be 0.1 mm or more, such as 0.2 mm, 0.3 mm, 0.4 mm or 0.5 mm, and also 1 mm It may be more than, for example, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, or 5mm. It should be noted that in the double glass photovoltaic assembly as shown in FIG. 6 , there are generally two busbars 12 that pass through the through holes 13 and bend. This is to make the distance between the curved edge 121 of the two busbars 12 larger than zero when designing the distance between the curved edge 121 of the busbar 12 and the edge 131 of the through hole, That is, it is necessary to avoid contacting the curved edges 121 of the two bus bars 12 with each other.

Further, in the double glass photovoltaic assembly, the through hole 13 of the glass of the back plate is generally circular, the edge 131 of the through hole is arc-shaped, and the curved edge of the busbar 12 ( Since 121 is generally linear, the distance between the curved edge 121 of the busbar 12 and the edge 131 of the through hole is not the same everywhere. In this case, in the embodiment of the present disclosure, the distance between the curved edge 121 of the bus bar 12 and the edge 131 of the through hole indicates the minimum distance therebetween (the distance indicated by the reference numeral d in FIG. 6 ). . 6).

In the embodiment of the present disclosure, the first frame 21 and the second frame 22 may be provided axially symmetrically with the longitudinal centerline of the laminate member 1 as the axis of symmetry. That is, the upper end and lower end of the first frame 21 and the second frame 22 are on the same plane, respectively.

Of course, the first frame 21 and the second frame 22 may not be provided axially symmetrically with the longitudinal centerline of the laminate member 1 as the axis of symmetry.

In one embodiment of the present disclosure, there is a distance between both ends of the first frame 21 and both ends of the second frame 22 and both short sides of the laminate member 1 .

In the case of the first frame 21 , there may be only a distance between the upper end (or lower end) and the upper side (or lower side) of the laminate member 1 . In the case of the second frame 22 , there may be only a distance between the upper end (or lower end) of the laminate member 1 and the upper side (or lower side).

In the embodiment of the present disclosure, the first frame 21 may also be provided axially symmetrically with the transverse centerline of the laminate member 1 as the axis of symmetry, and the second frame 22 is also provided in the laminate member 1 . It may be provided axially symmetrically with the horizontal center line of the symmetrical axis.

The length of the first frame 21 and the length of the second frame 22 may be the same or different.

In one embodiment of the present disclosure, the ratio of each of the lengths of the first frame 21 and the second frame 22 to the long side length of the laminate member 1 is 50% or more, for example, 50%, 55%, 60%. %, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100%, and the like. For other versions of the assembly, the lengths of the first frame 21 and the second frame 22 can be adaptively adjusted. For example, in the case of the assembly of the 60-sheet version, the ratio of each of the lengths of the first frame 21 and the second frame 22 to the long side length of the laminate member 1 is 50% or more. (eg, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100%, etc.). In the case of the assembly of the 70-seat version, the ratio of each of the lengths of the first frame 21 and the second frame 22 to the long side length of the laminate member 1 may be 60% or more (eg, 60%, 65%). , 70%, 75%, 80%, 85%, 90%, 95%, or 100%, etc.).

In an embodiment of the present invention, the first frame 21 and the second frame 22 may adopt the frame structure shown in FIG. 9 . Specifically, the frame includes a first mounting plate a1 , a second mounting plate a2 and a connecting plate a4 . The first mounting plate a1 and the second mounting plate a2 are arranged facing each other, and the first side of the first mounting plate a1 and the first side of the second mounting plate a2 are respectively a connecting plate a4 is connected with; The laminate member 1 is disposed between the first mounting plate a1 and the second mounting plate a2, and is fixed to the first mounting plate a1 and the second mounting plate a2 via an adhesive.

As shown in FIG. 9 , the frame may further include a third mounting plate a3 facing the second mounting plate a2, and the second mounting plate a2 includes the first mounting plate a1 and It is located between the third mounting plates, and the first side of the third mounting plate a3 is also connected to the connecting plate a4. In a possible embodiment, the first mounting plate a1 , the second mounting plate a2 , and the third mounting plate a3 are substantially parallel and the connecting plate a4 comprises the first mounting plate a1 , the second mounting plate a3 perpendicular to the second mounting plate a2 and the third mounting plate a3. The third mounting plate a3 is used to install the double glass photovoltaic assembly together with the bracket.

Generally speaking, the first mounting plate a1 , the second mounting plate a2 and the third mounting plate a3 are substantially rectangular. For convenience of description in the embodiment of the present disclosure, the two side edges in the width direction of the first mounting plate a1 (the second mounting plate a2 and the third mounting plate) are separated from the first mounting plate ( a1) (the second mounting plate a2 and the third mounting plate a3) are called two sides a1 and the first mounting plate a1 (the second mounting plate a2 and the third mounting plate a3) The both longitudinal edges of (a3)) are referred to as the two ends of the first mounting plate a1 (the second mounting plate a2 and the third mounting plate a3).

The double glass photovoltaic assembly provided by the embodiment of the present disclosure may be installed with a bracket in the manner shown in FIG. 7 . Specifically, the longitudinal bracket 3 ′ is secured between two adjacent double glass photovoltaic assemblies by means of an intermediate clamp 4 , and the outermost double glass photovoltaic assembly is held on the outside by an edge clamp 5 . It is fixed to the vertical bracket (3'). The intermediate clamp 4 (edge clamp 5) presses the frame of the double glass photovoltaic assembly against the longitudinal bracket 3'. And in the intermediate clamp 4 (edge clamp 5) and the longitudinal bracket 3', there is a mounting hole through which the bolt passes to fix the intermediate clamp 4 (edge clamp 5) and the longitudinal bracket 3'. This is provided correspondingly to fix the double glass photovoltaic assembly with the longitudinal bracket 3'.

Alternatively, a double glass photovoltaic assembly according to an embodiment of the present disclosure may also be installed with a bracket in the manner shown in FIG. 11 . Specifically, as shown in Fig. 9, a mounting hole a31 is provided in the third mounting plate a3 of the frame. 11, the bolt passes through the mounting hole a31 of the third mounting plate a3 and the mounting hole of the vertical bracket 3', respectively, so as to attach the double glass photovoltaic cell assembly to the vertical bracket 3' and the vertical bracket 3'. fixed directly.

In one embodiment of the present invention, the adhesive for fixing the laminate member 1 to the first mounting plate a1 and the second mounting plate a2 may be a sealant such as silicone.

As shown in FIG. 9 , in the double glass photovoltaic cell assembly according to the embodiment of the present disclosure, the elastic protection X is formed with the first mounting plate a1 of the first frame 21 and the second frame 22 and It may be provided between the second mounting plates a2. As shown in Figure 10, the elastic protection (X), the upper portion (X11) and the lower portion (X12) disposed facing each other; and a U-shaped main body (X1) including a connection portion (X13) connecting the upper portion (X11) and the lower portion (X12); Here, the upper part X11, the lower part X12, and the connecting part X13 are fixed to the first connecting plate a1, the second connecting plate a2, and the connecting plate a4, respectively.

In the embodiment of the present disclosure, the elastic protection X does not cover the entire first and second mounting plates a1 and a2 in the longitudinal direction of the first and second mounting plates a1, a2, that is, the laminate member Only a part of (1) is located between the upper portion (X11) and the lower portion (X22) of the elastic protection (X). And the portion of the laminate member located outside the elastic protection (X) is fixed to the first connecting plate (a1) and the second connecting plate (a2) through the adhesive, and the laminate member (1) is the elastic protection (X) may not be fixed to By providing the elastic protection X, it can be seen that there is a gap between the edge of the laminate member 1 and the first mounting plate a1, the second mounting plate a2 and the connecting plate a4. can In this way, when a load is applied to the double-glazed photovoltaic assembly, the glass of the double-glazed assembly has a certain moving space in addition to the cushioning effect of the elastic shield,

Since the glass of the double glass photovoltaic assembly is not easily broken, the load capacity of the double frame photovoltaic assembly according to the embodiment of the present disclosure is further improved.

In an embodiment of the present invention, the elastic protection 10 may be fixed to the first mounting plate a1, the second mounting plate a2 and the connecting plate a4 by an adhesive (eg, silicone), or It can be fixed to the first mounting plate a1, the second mounting plate a2 and the connecting plate a4 by mechanical connection.

Optionally, as shown in FIG. 10 , a protrusion X2 is further formed on the upper portion X11 of the U-shaped body X1, and of the first mounting plate a1, the second mounting plate a2 and A slot cooperating with the projection X2 is formed on the opposite side, and the projection X2 is snapped into the slot of the first mounting plate a1.

Optionally, at the free ends of the upper portion X11 and the lower portion X12 of the U-shaped body 11, a covering portion X14 is formed, respectively, so that the second side edge of the first mounting plate a1, respectively and the second side edge of the second mounting plate a2. The provision of the cover portion X14 facilitates disposing the edge of the laminate member 1 between the first mounting plate a1 and the second mounting plate a2, and the edge of the laminate member 1 is In the process of arranging between the mounting plate (a1) and the second mounting plate (a2), it is possible to prevent the upper portion (X11) and the lower portion (X12) of the elastic protection (X) from shrinking and wrinkling. Preferably, the lid portion X14 is formed as a snapping portion extending outwardly from the U-shaped body X1, the snap portion being the second side edge and the second mounting portion of the first mounting plate a1, respectively. It is snapped to the second side edge of the plate a2_.

In a possible implementation of the embodiment of the present disclosure, the number of the elastic protection X is two or more, and two of the elastic protection X are located at both ends of the first connecting plate a1, respectively. By providing the elastic protection X at both ends of the first connecting plate a1 (that is, the second connecting plate a2), the adhesive used to bond the laminate member 1 and the frame overflows at both ends. it can be prevented This ensures cleanliness in the preparation process of the double glass photovoltaic cell assembly provided by the embodiment of the present disclosure and also ensures the reliability of the adhesion between the laminate member 1 and the frame.

The number of elastic protections X disposed between the elastic protections X at both ends is not strictly limited in the embodiment of the present disclosure, and may be determined according to the lengths of the first frame 21 and the second frame 22 . can

In an embodiment of the present disclosure, the elastic protective material (X) may be a rubber component, a silicone component, a thermoplastic component, or other elastic component.

Further, a double glass photovoltaic assembly generally comprises a plurality of cell strings, each cell string comprising a plurality of solar cells 11 connected by interconnecting bars. And the bus bar 12 is connected to the interconnect bar to collect the current of the cell string.

The solar cell sheet may be a single-sided solar cell or a double-sided solar cell. That is, the double-glazed photovoltaic cell assembly according to the embodiment of the present disclosure is applicable not only to the double-sided double-glazed glass, but also to the single-sided double-glazed photovoltaic assembly.

The solar cell 11 may be a whole-piece solar cell or a sliced solar cell. A complete solar cell refers to a square or square cell with truncated edges. A partial solar cell is obtained by cutting a whole solar cell, and has a rectangular shape, and a cut rate may be 1/2, 1/3, 1/4, 1/5, or the like. The 60 and 72 sheets mentioned in the assembly of the 60 and 72 sheet versions above refer to the total number of full solar cells included in the assembly.

In the embodiment of the present disclosure, the position of the junction box 3 may be determined according to the version of the assembly.

In some versions of the assembly, the junction box 3 is provided near one short side of the laminate member 1 , such as a complete solar cell photovoltaic assembly. It should be noted that when this type of double glass photovoltaic cell assembly is installed, the short side close to the junction box 3 faces upward and away from the ground.

In some versions of the assembly, the junction box 3 is provided at an intermediate position along the length of the laminate member 1 , for example a half part (half part) solar cell photovoltaic assembly.

It can be seen that the position of the through hole 13 on the glass of the rear plate corresponds to the position of the junction box 3 .

In the double glass photovoltaic assembly provided by the embodiment of the present invention, the solar cells 11 may also be arranged in an “imbricated” manner. That is, the edges of adjacent solar cells in the same string overlap. In the case of a double glass photovoltaic cell assembly arranged in a “waving” manner, the junction box 3 is disposed on the rear side of the laminate member 1 and is disposed close to one long side of the laminate member 1 .

This embodiment also provides another double glass photovoltaic assembly comprising a laminate member 1 and a first frame 21 and a second frame 22 respectively disposed on both long sides of the laminate member 1 .

Optionally, the first frame 21 and the second frame 22 are provided axially symmetrically with the longitudinal centerline of the laminate member 1 as the axis of symmetry.

Optionally, the upper end of the first frame 21 , the upper end of the second frame 22 and the upper short side of the laminate member 1 are coplanar.

Optionally, there is a distance between both ends of the first frame 21 , both ends of the second frame 22 and both sides of the laminate member 1 .

Optionally, the first frame 21 is provided axially symmetrically with the transverse centerline of the laminate member 1 as the axis of symmetry, and the second frame 22 is provided roughly with the transverse centerline of the laminate member 1 as the axis. is provided axially symmetrically.

Although the above-described embodiment is a preferred embodiment of the present disclosure, the embodiment of the present disclosure is not limited to the above-described embodiment. All changes, modifications, substitutions, and combinations made without departing from the spirit and principle of the present disclosure must be equivalent substitutions, and therefore all are included within the protection scope of the present disclosure.

1: laminate member, 11: solar cell sheet, 12: bus bar, 121: bent edge, 13: through hole, 131: edge of through hole, 21: first frame, 22: second frame, 3: junction box, 4: middle clamp, 5: edge clamp, a1: first mounting plate, a2: second mounting plate, a3: third mounting plate, a31: mounting hole, a4: connecting plate, X: elastic blank, X1: U female body, X11: upper part, X12: lower part, X13: connection part, X14: cover part, X2: protrusion part,
2': Frame of conventional double-glazed photovoltaic assembly
3': vertical bracket
4': horizontal bracket

Claims (22)

A laminate including a laminate member (1), a junction box (3), and a first frame (21) and a second frame (22) disposed only on both long sides of the laminate member (1) A glass photovoltaic assembly comprising:
The laminate member 1 includes a cover plate glass, a first encapsulation adhesive film, a battery string, a second encapsulation adhesive film, a back plate glass and a bus. includes a busbar (12);
a circular through hole 13 is provided in the rear plate glass;
One end of the bus bar 12 is connected to the battery row, and the other end of the bus bar passes through the through hole 13 and is bent to form a bending edge 121 to the junction box 3 connected;
The curved edge 121 of the bus bar 12 does not contact the arc-shaped edge 131 of the through hole 13,
There is a distance between both ends of the first frame 21 and both ends of the second frame 22 and both short sides of the laminate member 1,
double glass photovoltaic assembly. According to claim 1,
a distance between the curved edge (121) of the busbar (12) and the edge (131) of the through hole is at least 0.1 mm. 3. The method of claim 2,
a distance between the curved edge 121 of the bus bar 12 and the edge 131 of the through hole is 0.2 mm, or 0.3 mm, or 0.4 mm, or 0.5 mm, or 1 mm, or 1.5 mm, or 2 mm; or 2.5 mm, or 3 mm, or 3.5 mm, or 4 mm, or 4.5 mm, or 5 mm or more;
double glass photovoltaic assembly. 4. The method according to any one of claims 1 to 3,
the first frame 21 and the second frame 22 are provided axially symmetrically with the longitudinal centerline of the laminate member 1 as the axis of symmetry; and/or
The first frame 21 is provided axially symmetrically with the transverse centerline of the laminate member 1 as the axis of symmetry, and/or
and the second frame (22) is distributed symmetrically with respect to the transverse centerline of the laminate member (1) as the axis of symmetry. 4. The method according to any one of claims 1 to 3,
The length of the first frame 21 and the length of the second frame 22 are the same, and/or the length of the long side of the laminate member 1 is the length of the first frame 21 and the second frame A double glass photovoltaic assembly, wherein the proportion of the length of the frame 22 may be at least 50%. 4. The method according to any one of claims 1 to 3,
The first frame 21 and the second frame 22 include a first mounting plate (a1), a second mounting plate (a2), and a connecting plate (a4), The first mounting plate a1 and the second mounting plate a2 are arranged facing each other, and the first side of the first mounting plate a1 and the first side of the second mounting plate a2 are respectively the connected with the connecting plate;
The laminate member 1 is disposed between the first mounting plate a1 and the second mounting plate a2, and is attached to the first mounting plate a1 and the second mounting plate a2 via an adhesive. Fixed, double-glazed photovoltaic assembly. 7. The method of claim 6,
An elastic protector (X) is provided between the first mounting plate (a1) and the second mounting plate (a2), and two elastic protectors (X) are attached to the first mounting plate (a1) are located at both ends of;
Each of the elastic protection (X),
The upper part (X11) and the lower part (X12) arranged to face each other; and
is formed as a U-shaped main body (X1) including a connecting portion (X13) connecting the upper portion (X11) and the lower portion (X12);
the upper part (X11), the lower part (X12) and the connecting part (X13) are respectively fixed to the first mounting plate (a1), the second mounting plate (a2) and the connecting plate (a4);
A part of the laminate member 1 is positioned between the upper part X11 and the lower part X12, and a part of the laminate member 1 positioned outside the elastic protection X is connected to the first part through an adhesive. A double glass photovoltaic cell assembly secured to a mounting plate (a1) and said second mounting plate (a2). 8. The method of claim 7,
a protrusion (X2) is formed on the upper portion (X11) of the U-shaped body (X1);
A double glass photovoltaic cell assembly, wherein a slot cooperating with the projection (X2) is formed on a side of the first mounting plate (a1) facing the second mounting plate (a2). 8. The method of claim 7,
The free ends of the upper part X11 and the lower part X12 of the U-shaped body X1 have the second side edge of the first mounting plate a1 and the second side of the second mounting plate a2, respectively. A double glass photovoltaic cell assembly, each formed with a covering portion (X14) covering the edge. 10. The method of claim 9,
and the lid portion (X14) is formed as a snapping portion extending outwardly from the U-shaped body (X1). 4. The method according to any one of claims 1 to 3,
the cell row comprises a plurality of solar cells that are single-sided solar cells or double-sided solar cells, and/or
wherein the solar cell is a whole-piece solar cell or a sliced solar cell.
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